Unitary combustion chamber



Oct. 17, 1950 D. c. SINCLAIR UNITARY COMBUSTION CHAMBER Filed Sept. 4) 1948 INVENTOR.

Patented Oct. 17, 1950 UNITARY COMBUSTION CHAMBER Donald C. Sinclair, South Hadley Falls,'Mass., as-

signor to Harvey-Whipple, Incorporated,

Springfield, Mass a corporation Application September 4, 1948, Serial No. 47,799

1 Claim. (01. 153-1) This invention relates to improvements in combustion chambers and the principal object of the invention is the provision of a unitary combustion chamber which is constructed and arranged for placement as a unit in the fire box of a boiler, furnace or the like.

The novel construction is adapted for many and various usesbut is particularly adapted for disposition in a furnace, boiler or the like. It is common practice to construct a combustion chamber in a furnace or boiler from refractory material which is not only difficult and expensive but under the best of conditions requires frequent repairs and reconstruction.

According to this invention, a unitary combustion chamber is provided which is not only economical to produce but also may be readily and easily installed in or removed from a boiler or furnace.

Due to the novel construction, the combustion chamber has a long, useful life as compared with those of prior art practice. Its efficiency is equal to and exceeds the common combustion chamber and in the event replacement becomes necessary, same may be readily and economically accomplished.

With the foregoing and various other novel features and advantages and other objects of my invention as will become more apparent as the description proceeds, the invention consists in certain novel features of construction and in the combination and arrangement of parts as will be hereinafter more particularly pointed out in the claim hereunto annexed and more fully described and referred to in connection with the accompanying drawings wherein:

Fig. 1 is a front elevational view of the unitary combustion chamber embodying the novel features of the invention;

Fig. 2 is a side elevational view of the chamber shown in Fig. 1; and

Fig. 3 is a plan view of the chamber shown in Figs. 1 and 2.

Referring now to the drawings more in detail, the invention will :be fully described.

An elongated cylindrical shell 2 is provided which has secured to opposite ends a front header 4 and a rear header 6.

Flanges 4' and 6' may be provided on opposite ends of the shell which may be secured to the header as by welding although the parts may be secured together in other usual ways.

A longitudinal opening 8 is provided in the upper side of the shell at opposite sides of which there are fenders [0 which extend upwardly at opposite sides of the opening.

Refractory material I2 is disposed in the rear end of the shell. This may take any desired form and be of any thickness. An inwardly projecting bead I4 extends around the shell and serves as a forward retaining means for the refractory. Other means may be employed for the purpose.

The shell and associated parts will preferably be made from sheet material best adapted to withstand the effect of heat and action of the products of combustion. Stainless steel has been found suitable for the practice of the invention, but it is not desired to be limited thereto. The refractory material selected will be that which is best adapted for the practice of the invention.

The member 4 may have an opening is for insertion of a fuel burner therethrough into the chamber. Such a, burner may be an oil burner, gas burner, or the like.

The chamber may of course be made to have any desired dimensions and is easily and readily inserted into a boiler, furnace or the like. The combustion chamber may be supported in a fire E0); on bricks or the like on the bottom of said A fuel burner such as an oil burner, gas burner, or the like, may be secured to member 4 and extend into the chamber. With the chamber disposed in a boiler or furnace, the products of combustion pass upwardly through opening 8 between the members 10.

As will be observed the unitary combustion chamber is compact so as to facilitate shipping and storage and is readily and easily insertable in and withdrawable from a boiler or furnace.

The invention may be embodied in other specific forms without departing from the essential characteristics thereof. Hence, the present em-. bodiments are therefore to be considered. in all respects merely as being illustrative and not as being restrictive, the scope of the invention being indicated by the appended claim rather than by the foregoing description, and all modifications and variations as fall within the meaning and purview and range of equivalency of theappended claim are therefore intended to beembraced therein.

What it is desired to claim and secure by Let ters Patent of the United States is:

As a new article of manufacture, a, self-contained combustion chamber construction adapted for insertion as a unit in a furnace or the like comprising in combination, an elongated cylindrical hollow shell formed from sheet metal having annular outwardly extending flanges at forward and rear ends thereof, a sheet metal header member secured to the flange at the rear end of said shell, a sheel metal plate secured to the flange at the forward end of said shell and having an opening therethrough for an oil burner, said shell provided with an elongated opening in the upper side thereof terminating inwardly from the flanges at forward and rear ends thereof, elongated members at opposite longitudinal sides of said opening extending outwardly from shell in relatively converging relation, said shell having an inwardly extending relatively narrow circumferential projection disposed inwardly from the rear end thereof having a side adjacent said header member in substantial alignment with the end of said elongated opening adjacent the rear end of the shell, and refractory material in the 4 rear end of said shell between said projection and said header member.

DONALD C. SINCLAIR.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,903,313 Johnson Apr. 4, 1933 2,114,584 Aunger Apr. 19, 1938 2,135,275 Cannon Nov. 1, 1938 2,149,182 Powers Feb. 28, 1939 2,157,643 Westwick May 9, 1939 2,161,021 DeLin June 6, 1939 2,197,619 Mueller Apr. 16, 1940 2,245,586 Holmann June 17, 1941 2,341,622 Kaufman Feb. 15, 1944 

